Marina Krim returned home Thursday to her luxury apartment building at 75th and Columbus Avenue to find her 2-year-old son, Leo, and 6-year-old daughter, Lucia, in a bathtub. Each had been stabbed multiple times with a kitchen knife, police said.

Just when it seemed the details of the brutal murders could not possibly get worse, Kelly said Ortega was not unconscious, as was first thought, when the mother of the slain children arrived home to the horrific scene.

“We believe now that the nanny began to stab herself as the woman entered the room, entered the bathroom,” Kelly said, noting that that information came directly from the mother.

“Everything is just … I don’t know what to say! I know what this mother is going through right now, I’m a mother, too. I have two kids. God!” nanny Christine Angelo told CBS 2’s Tony Aiello.

Krim’s husband, Kevin Krim, who is the Senior Vice President and General Manager of CNBC Digital, had just returned from a business trip and was reportedly told the devastating news at the airport.

Comcast and NBCUniversal issued a statement calling the deaths of a the two young children “an unimaginable loss.”

“The sadness that we all feel for Kevin, Marina and their family is without measure,” the statement said. “Our thoughts, prayers and unwavering support are with them all.”

Marina Krim kept a loving blog about her children on livejournal.com called “Life With The Little Krim Kids.” It was filled with thousands of posts and pictures.

She last posted at 2:30 p.m. Thursday, just three hours before she discovered the bodies.

She wrote:

Leo speaks in the most adorable way possible. Firstly, he speaks super clearly, so you can understand every word is is saying. And he does things like, “I want a fresh bagel” and “Dito (what he calls himself) wants cold milk” and most adorable of all, “No thank you”-he never uses “No” alone, it’s always paired with “thank you”.

Yoselyn Ortega. (credit: Image via CBS 2)

In February, Krim wrote on her blog about visiting their nanny’s family in the Dominican Republic.

“We met Josie’s amazing familia!!! And the Dominican Republic is a wonderful country!!” she wrote.

It’s not still clear if the woman she refers to in the post as Josie is the same nanny found wounded Thursday.